Serious effects are rare and generally only occur when multiple pouches are swallowed or the user is sensitive to nicotine
According to the digital patent for nicotine pouches, they have a density of 0.8 g/cm3
#12 I'm guessing it would be near impossible on the interior fuse panel at night if one didn't have a torch or something
Need expert Cigarette Smoke Removal in Fruitport - MI
doi:10.1073/pnas.1909653116
Nathanson, Disease prevention as social change: The state, society, and public health in the United States, France, Great Britain, and Canada (Russell Sage Foundation, 2007), pp 109-159 online "Tourists in France could now face fines for smoking on the beach"