There's a similar subject here with IAQ or indoor air quality. The experts have been saying it's far more serious than the effects of second hand smoke.

Truth: indoor air quality is for shit, and has always been shit, and it is slowly killing us by contributing to stroke, heart disease, cancers and respiratory disease.

People look at the smog in China and are shocked at the state of the air, as they ought to be.

However most people spend most of their time indoors. The concentration of pollutants in proximity to you is what is dangerous.

Indoor air quality in the average home is so bad that it easily exceeds the threshold at which health inspectors would shut down a restaurant.

If you want to live longer there is a few simple things you can do. If you have money, get an actual effective vent for your cooking area and obtain a HRV. If you don't have money acquire a selection of plants and put them into your kitchen, bathroom and bedroom. Then ensure you open a window (using a directed fan if possible) when cooking.

If anybody wants more information I'll look up the videos on IAQ and NASA study confirming what I've been saying.