Drug resistant “space bugs” have been found aboard the International Space Station. They were found in the bathrooms and and gym equipment. The bug’s close relative have been previously spotted in Tanzania, where an outbreak of them killed infants. The bugs on the ISS aren’t deadly, but they could be harmful enough to hurt operations.
For more information: https://www.popularmechanics.com/science/health/a25335732/drug-resistant-space-bugs-found-aboard-the-iss/
This relates to engineering because the ISS is a product of hard work. If these “space bugs” become dangerous, then all could be lost.