Open doors and windows to clear out any lingering smoke. Open at least two windows or doors on opposite sides of the room. This creates a cross breeze that will suck fresh air in through one opening and push the smoke out of the other.
The best way to vent that area would be around a 360 cfm exhaust fan to get around 10 air changes per hour. Given the cigar smoke, I would exhaust all that air to the outside for air quality.
Increase ventilation by opening windows and doors, and use fans or air purifiers to facilitate airflow. This helps remove airborne smoke particles and freshens the indoor environment.
When a person smokes indoors, the smoke can linger in the room for several hours before it dissipates. This means all the compounds that make up the smell have ample time to soak into fabrics, walls, and other porous materials. If the smoke comes from a cigarette (which contains tar), the problem is especially bad.
Heavy Curtains: Hang thick, heavy curtains over windows and doors to help absorb smoke and reduce its entry. Room Divider: If possible, use a room divider to create a physical barrier between your space and the source of smoke.
Do air purifiers really remove smoke? Yes, "Air purifiers remove smoke by using a combination of filters, primarily HEPA filters (which capture the fine particulate matter present in smoke) and activated carbon filters (which filters adsorb volatile organic compounds, or VOCs, and odors)," explains Podjasek.
The best way to accomplish this is to install exhaust fans in the ceiling. Alternatively, you place a simple box fan inside the window. This will allow it to blow air to the outside, thus vacuuming smoke out of the smoking room. There are advanced exhaust systems that you can integrate into walls or ductwork.
Secondhand smoke can linger in a room for up to about five hours. In fact, it can even travel through stairwells and ventilation units. This means people who live in apartment buildings risk exposure without ever leaving their home. Particles from tobacco smoke can settle on surfaces and last several months.
While aircon's are not designed to filter smoke particles they can be used to an extent to lower the level of smoke inside. Some air conditioners can be set to draw fresh air from outside. If your aircon does this it's essential to turn it off the 'Fresh Air' setting to ensure it's not continually drawing smoky air in.
A bowl of vinegar can start absorbing odors almost immediately and is typically adequate for up to 24 hours. When left out in a room, the acetic acid in vinegar neutralizes alkaline odors, such as those from smoke, cooking, or pet accidents, by binding with the odor molecules and neutralizing them.
You'll look like a windmill, but a wet towel will suck in smoke particles.
Baking soda, for example, is an inexpensive and natural odor-absorber. Peek suggested leaving bowls of baking soda around the house for several days for full effect. “Activated charcoal also is an option to help absorb odors. Use it like you would baking soda and place it in bowls around the house for several days.
it certainly will move the air and keep the smoke from lingering.
An exhaust hood is required to vent the CTO or CTO-DW smokers if they are installed indoors. Most inspectors are requiring these smokers to be under their own hood and not under a larger hood that may be venting other appliances.
Side ventilation is the most frequently used form of ventilation and also the easiest. Firefighters entering the building for search and rescue or fire attack start a form of side ventilation by opening doors and windows to make entry.
Use vinegar
Like baking soda, this removes odours naturally – you can also leave bowls of it around the home to absorb the smell. You can spray the vinegar onto your curtains and rugs to deodorize them.
Again, smoke itself dissipates quickly – otherwise we'd see it in the air long after a cigarette was put out. Cigarette smoke can last in a room for up to several hours before it dissipates.
Ventilation, Ventilation, Ventilation
A major problem for indoor air quality is high moisture levels, but regular ventilation can help lower these levels and clean up the air in your home. Trickle vents can purify and cycle the air you breathe, while exhaust fans can help carry pollutants outside.
If it's safe to do so, open doors and windows as much as you can to bring in fresh, outdoor air. While it's better to open them widely, even having a window cracked open slightly can help. If you can, open multiple doors and windows to allow more fresh air to move inside.
Open at least two windows or doors on opposite sides of the room. This creates a cross breeze that will suck fresh air in through one opening and push the smoke out of the other.
While many people know that an air purifier can help with allergens such as mold and pollens, the good news is that using an air purifier can help to remove smoke from the air as well. Not only can an air purifier help to remove smoke odors, but it can capture many of the harmful chemical components as well.
Set out bowls of activated charcoal throughout your house, which will absorb the smoky odor. Alternatively, try setting out bowls of kitty litter, baking soda, or coffee grinds which may also help absorb lingering smells.
Steam is another useful tool for removing a smoke smell. The heat breaks down oils that contain the smoke molecules and the water helps to wash them away. Rent or buy a steam cleaner and use it on furniture or walls.
Air out the home or business.
Open the doors and windows for ventilation. Consider removing the window screens to increase air flow. If it's cold outside, opening doors and windows just a crack will help. Use fans to push out the smoke smell.