Nitrous oxide

Automotive-grade liquid nitrous oxide differs slightly from medical-grade nitrous oxide. A small amount of sulfur dioxide (SO ) is added to prevent substance abuse. Multiple washes through a base (such as sodium hydroxide) can remove this, decreasing the corrosive properties observed when SO is further oxidised during combustion into sulfuric acid, making emissions cleaner.

Question: is nos for cars the same as laughing gas
Answer: no