We all know ‘Tear Gas’. It is a gas that irritates the eyes and cause tearing (lacrimation) and sometimes, vomiting. It can kill in extreme cases. Common lachrymators include pepper spray (OC gas), CS gas, CR gas, CN gas (phenacyl chloride), nonivamide, bromoacetone, xylyl bromide, syn-propanethial-S-oxide (from onions), and Mace (a branded mixture).
the other hand, nitrous oxide, commonly known as laughing gas, nitrous, nitro, or NOS is a chemical compound with the formula N2O. It is anoxide of nitrogen. It causes uncontrollable laughter when inhaled. In extreme cases too, it can cause death by interfering with oxygen exchange in the lungs. In medicine, it’s used (in combination with oxygen) as inhalational anaesthetic.
If you were to be part of a peaceful or otherwise street protest against something you are very passionate about, which would you prefer police to use to disperse your protest if at all they have to, laughing gas or tear gas? Would you rather laugh home or cry home?