He Had Fentanyl in His System After Perrys colon exploded in 2018 and he had to have a colostomy bag, he was prescribed opiates which were the reason his colon exploded in the first place
To date, over 7,000 chemicals have been identified in cigarette smoke, including acetone (solvent and paint stripper), ammonia (powerful and poisonous gas), arsenic (potent ant poison), benzene (poisonous toxin), butane (flammable chemical in lighter fluid), cadmium (employed in batteries), carbon monoxide (poisonous gas in auto exhaust), formaldehyde (preservative for dead bodies), hydrogen cyanide (deadly ingredient in rat poison), methanol (jet engine and rocket fuel), polonium-210 (radioactive element) and toluene (poisonous industrial solvent) (IARC Working Group on the Evaluation of Carcinogenic Risk to Humans, 2004

Years after its designation, further research and cross-referencing of similar phenomena suggest that while the advent of modern photography and videography has made definitive evidence of SCP-4999's form more prevalent, written and artistic depictions of individuals whose behavior and appearance resemble SCP-4999 have long existed in histories, cultures, and legends across the world
Also there are pick-pocketers in crowded areas
This is eerily similar to how the US and the UK began carrying warning labels on cigarette packs
Ventilation Tools & When to Use Them Power Vents A power vent simply pulls smoky air out of the lounge