Can hamsters as pets contribute to pulmonary fibrosis?

Generally no.: The cause of pulmonary fibrosis is not known, but hamsters haven't been associated with it. Hypersensitivity pneumonitis can be caused by pet birds and lead to pulmonary fibrosis in rare cases.

Rarely : There is a rare condition called hypersensitivity pneumonitis or extrinsic allergic aveolitis that can be caused by exposure to hamsters and their feces. Usually this is from birds, but any animal can cause it if you have a proclivity and are exposed long enough. The cure is to remove the patient from the animal.

Yes: Some people can develope a sensitivity to their pets. This can lead to a condition called hypersensitivity pneumonitis. Untreated this can lead to pulmonary fibrosis.

Highly unlikely: Never heard of it. However, if this is a new connection, do not hesitate to investigate.

Unlikely: Allergies are more likely. Pulmonary fibrosis could possibly occur from hypersensitivity pneumonitis, but this hasn't been described.