According to the US National Institute for Occupational Safety and Health (NIOSH):
Allergic reactions are among the most common conditions that adversely affect the health of personnel involved in the care and use of animals in research.
Symptoms of allergies include sneezing, nasal congestion, itchy eyes and cough.
Some personnel may even develop asthma or other respiratory disorders.
Personnel should protect themselves from exposure to animals and animal products.
Seek medical attention in case allergy symptoms develop.