I have read a report on CBD for pets. Sadly not all CBD is THC free. I really think more studies, more quality control is needed in the industry, both for pets and humans. It’s done for other pharmaceuticals, again both pets and humans.
CBD aside, it seems the REAL concern here is air quality for your chin. Like chins, hedgies have sensitive respiratory systems. And I personally have a compromised respiratory system plus allergies. I read labels voraciously for anything I might consider using in my home - candles, diffusers, cleaners. I have an oil diffuser in my living room where I spend much time and where my hedgehogs are housed. I got it as much for some needed humidity (living in a very dry climate) as for freshening fragrance, especially in winter with the house closed up. When I use oils I use only pure essential oils, minimal amounts and never “hot” oils that can irritate respiratory systems. (cinnamon, camphor, eucalyptus, clove, peppermint are all hot and should be used minimally on skin or as fragrance) Sometimes I simply use plain water. I avoid cleaning products with artificial fragrances and stay with essential oils and extracts, preferably organic. In over 20 years I’ve never had respiratory issues in my hedgies from these. Dusty paper and wood shavings bedding have caused problems! Can’t tell you how many rescues I’ve taken in sick from that... yet those products continue to be sold unquestioned. sigh.