In the air, yes. Ingested? Never.

We have in the air, but it is poisonous if they ingest it so not on them or in the bath.
A warm humidifier is probably the larger danger here.

I’m not sure what a euky bear is so I cant really comment

Yes, I believe so – but you might want to double check with a medical professional.

I’d say no, in case they ingest it