Also a lot of people dramatically overestimate the abilities of a fire extinguisher.
A regular extinguisher will put out a bit of burning paper or your cats tail on fire, but when a set of curtains is on fire you should probably just evacuate.
I usually keep two 5 pound ABC dry chemical extinguishers and a fire blanket in my house. They will put out a LOT of fire. People make the mistake of buying way too little extinguisher and not knowing how to use them.
My brother put out a wall of gun powder and solvents using two cheap 2.5lb ABC extinguishers.
A regular extinguisher will put out a bit of burning paper or your cats tail on fire, but when a set of curtains is on fire you should probably just evacuate.