You can sue for anything. But, you are looking at a long process. Wouldn't it be easer to try to remediate the mold? Or better yet ask for a release of your lease so that you can find another home.
Mold is a natural occurrence and can be found almost everywhere. If you have it in a home it is not the problem but the symptom of other problem, such as a water leak or condensation build up.
Talk to your landlord and ask for a release of the lease and find another home. This is the cheapest way to go.
If the landlord refuses, ask them if they would like you to call their insurance companyâ€¦