It probably contains colloidal silver---don't know if that is safe for them to inhale, but I am inclined to say no. Try Google and see what you get. Topically (on a cut etc), it would likely be safe, as long as it was used sparingly (it is anti-microbial and it is common in pet medicines for the skin and it is even found in some human lotions/wound cleaners etc), but silver builds up in people's systems when ingested, and given a bird's respiratory sensitivities (in conjunction with their sensitivity towards heavy metals in general) I would be very uncomfortable with the idea...Especially since it doesn't flush out over time (silver, that is)- even in humans. When consumed in excess, people can turn permanently blue from drinking water/colloidal silver lol/eek? There is even a theory that wealthy people of the past were called "blue-bloods" because of their access to silver and medications containing silver, which actually caused them to have blue-tinted skin (see: Argyria)! The thing is, a candle won't kill us, but it can seriously harm a bird (scents, smoke, wick coatings, wax etc). Also-- much of the mined silver that we use it collected from places that also mine/contain known toxic metals (zinc, lead etc).
