i thought this was about the news i heard
recently about a fatal episode with inhalng
compressed "air" which is called "dusting"

problem is, the propellant in the aerosol
cans is heavier than air and settles in
the lungs and does not let oxygen in
resulting in death..very dangerous

if you have any of these cans around
for cleaning key boards, photography equip,
etc. make sure to keep them out of reach
from kids.