Is it safe to smoke cigarettes or vape indoors with kids in the home?

What's actually in it

Tobacco leaves concentrate cadmium from soil. Smoking delivers a big dose to the smoker and measurable exposure to everyone in the room through secondhand smoke. Thirdhand smoke, the residue that sticks to walls, carpet, and clothes, continues off-gassing for months to years after the last cigarette. Kids crawling on a smoked-in carpet pick up cadmium and nicotine metabolites through skin and hand-to-mouth contact.

Vaping doesn't have tobacco but still delivers nicotine, propylene glycol breakdown products, and metals from the coil.

What the research says

A 2025 study in Biol Trace Elem Res estimated the global burden of dietary and cigarette-related cadmium exposure. Smoking was one of the largest single sources of cadmium for affected populations. The exposure burden fell heaviest on household members, including non-smoking partners and kids.

For someone who smokes: smoke only outdoors, away from entrances, change clothes before coming back inside, wash hands. For a home where someone used to smoke, deep-clean walls, carpet, curtains, and HVAC filters to reduce thirdhand residue. For kids, no exposure is safest, and the American Academy of Pediatrics says the same. Nicotine-replacement therapy and behavioral support have strong evidence for quitting; a primary care doctor can prescribe.