There have been enough tragedies down the years that the safety of the many will, possibly unfortunately, trump the anxiety of the few.
However, should you choose private accommodation, there would be no requirement for such tests unless you do the tests yourself. You should of course do that.
Perhaps your heightened anxiety could be put to the accommodation providers and you could be included somehow in fire prevention precautions. Much of the accommodation estate in university will be managed by external providers.