No, you can die from inhaling to much helium.
It might make you light headed or possibly pass out, but it won't kill you.
Helium isn't toxic to the body but does deprive it of needed oxygen. By inhaling Helium you are actually pulling oxygen out of the body and can be potentially dangerous if oxygen isn't reintroduced. As the related link states, sucking it in from a Helium balloon won't kill you. You might just get light-headed or pass out (don't hit your head). Inhaling it from a tank or climbing into a giant Helium balloon is extremely dangerous and there are fatal cases.
There aren't any records that show that inhaling helium gets you sick.
HELIUM is not toxic it is lighter than air.
Only if you inhale too much. Your lungs can't function without oxygen, and helium is devoid of it. Inhaling a little has no long term adverse effects so long as you blow it out.
No.
Yes and no. Helium by itself is not toxic, however, it displaces the oxygen in the air which can cause suffocation and oxygen deprivation to the brain.
Yes. Inhaling Ammonia is extremely dangerous. Ammonia is a poison. It can kill you.
Possibly.
Yes, the helium doesn't let oxygen get through to your brain and can definitly make you feel light headed an dizzy.
Inhaling Dust-off from its canned container can kill someone. It is a computer cleaner that contains refrigerant gas that can cause suffocation when inhaled.