The only way to know for sure is to contact your carrier. The answer is almost certainly No. Probable reasons are:
- It will upset non-smokers who don't know what you are doing
- It will upset smokers who will be reminded that they are not smoking
- Carrier does not know what is actually IN the device so will say no to be on the safe side
- Don't think about using them ln the toilets.
I'm told that patches do the trick for most.