brena
and it's also the same as this :
Ionmax ION260 Personal Ionic Air Purifier, View necklace air purifier, Ionmax Product Details from ANDATECH CORPORATION PTY LTD. on Alibaba.com
I cannot see any problem whatsoever in carrying one of these onboard, very confident. I also see it's powered by AAA batteries (not lithium), so that's another plus. You're now sorted, bon voyage!