Sphagnum - Loose or Packed Tight?

[early]

When I first started repotting new phals, I did not connect
orchids or any of the media with causing me to have asthma. I have not had asthma for a few years and first blamed it on my cat, the outdoor weeds my dogs track in, but finally narrowed it down to the moss. I search on the web for same and found a few things that cited moss allergy but none in connection with orchid repotting or growing in moss.
Any one else have this allergy?