The quit rates are for quitting smoking, but not necessarily quitting all nicotine product use: some recent quitters will have switched to ECs
In fact, because the filter causes the smoker to inhale more deeply and more frequently to obtain the needed nicotine and the flavor, thus increasing exposure to poison gases like carbon monoxide, cyanide, and ammonia, filtered cigarettes increase the risk of emphysema, lung cancer, and heart disease
The impact of tobacco smoking on treatment choice and efficacy in inflammatory bowel disease
If quittings not possible, then at least avoid smoking the day of the test
Use this simple guide: 150 sq ft room: smoke CADR near 150 CFM 250 sq ft room: smoke CADR near 250 CFM 400 sq ft room: smoke CADR near 400 CFM 600 sq ft room: smoke CADR near 600 CFM, or use two units Ceiling height matters too