"placed in cages with no partition had become infected" How close where the cages to each other. Sounds like right next to each other.
Over how long a period of time? I doubt it was 10 mins.
When they say "infected" what do they mean? Doesn't sound like any hamsters actually died.
Most fatal cases of the Wuhan China virus occur when someone is exposed like best dive watches under 2000 in close proximity of an infected person for an extended period of time.
Wearing a mask is going to become dive watches like taking your shoes off at the airport.
There is a little science here but I certainly would not base public policy on it.
If I am not "infected" and you are not "infected" wearing a mask is feckless.
In summary - If you are ugly wear a mask.
Damn it, was expecting hamsters with cute made to fit masks