Can you use vaporizers indoors

Yes you can use a vaporizer in doors.

However, if you are asking about the ability to use it indoors because you want to minimize smell, you should note a few things:

When you are finished, the smelliest part will be the remaining product, so bag that up and throw it away or flush it down the toilet.

Also, you will have a very slight smell that dissipates over a few hours. So, turn on the fan and try to mask the smell. Simply spraying body spray will only temporarily mask it. You will need something like incense to mask the smell. Good luck!