One whiff and you are dead? Get real, stop drinking the koolaid fella. They had to forge the results of several fake studies to even get a bare minimum measurable effect out of second hand smoke over a LONG TERM concentrated exposure.
Don’t interrupt him.
He’s on a roll.
My wife has moderate/severe COPD from 50 years/2 packs a day. I chain smoke pipes in house. Her spirometry hasn’t changed in the 20 years since she went cold turkey. Call it anectdotal.