Martian dust could cause lung disease including cancer.
Space suits and boots would become contaminated and bring the dust into the habitats.
How would human missions to Mars mitigate this issue?
One proposed solution to contamination of a habitat by extra-vehicular activity is a Suitport which eliminates the need to bring the suits inside. The crewmember enters and exits the suit through a door in the back of the suit. The suits remain external to the vehicle/habitat.
There are obvious issues with suit maintenance and exposure to the external environment, though.
A technical feasibility study can be read at Suitport Feasibility - Development and Test of a Suitport and Space Suit for Human Pressurized Space Suit Donning Tests which contains the following illustration
There were serious problems with the pdf'ing of this paper but there is still some good info in it.
Research into removing lunar dust from spacesuits and other equipment using electron beams may have a similar application on Mars.
The success of the electron cleaning was dependent on the thickness of the regolith coating, however an average of 75 – 85 percent of the fine particles were removed overall.
The researchers suggest that a hybrid strategy of electron beams and brushes could be used by future astronauts to keep their gear in order.