Answer:
Something you carry while singing.
Used to keep prisoners silent and to make temporary repairs on cars.
No matter how little or how much you use me, you change me every month. What am I?
What falls down but never gets hurt?
You roll it or you buy it, People say you shouldn't try it, Because you may get a stroke, From inhaling all that smoke.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?