Err.. what?
Particles going into your lungs to produce cognitive effects is the basis behind smoking cigarettes, marijuana, meth, etc.
Particles going into your lungs to produce cognitive effects is the basis behind smoking cigarettes, marijuana, meth, etc.
Nicotine, THC, etc. are the active ingredients expected to cause cognitive effects.
The particles are regarded as particularly unwanted--especially by marijuana users.
This is the whole idea behind vaporizers.