Making apartments airtight has other serious disadvantages: CO2 builds up and literally makes you worse at thinking; diseases spread more easily; air quality pl

Making apartments airtight has other serious disadvantages: CO2 builds up and literally makes you worse at thinking; diseases spread more easily; air quality plummets due to VOCs. Humans need fresh air. And it's not as easy to make an actually impermeable apartment as you'd think it is. Pretty much every material we build with allows some amount of air and particles to pass through. > Isn't second-hand (passive smoking) shown to not increase cancer[0]? That study takes one position on secondhand smoke and lung cancer, but lots of other studies have found that it does cause serious health problems, including but not limited to lung cancer: https://www.cdc.gov/tobacco/secondhand-smoke/health.html https://www.cdc.gov/tobacco/secondhand-smoke/health.html