What are my rights as a tenant after sewage has leaked out in my basement due to a plumber issue?

We have had sewage water coming up through the toilet and shower in the basement, out on the toilet floor and going through the walls out onto adjacent floors. the stench is unbearable. My landlord is not wanting to use professionals for clean-up but instead the handy man who, in my opinion, is not very competent. Instead of tearing out and replacing the carpet, they will disinfect with bleach etc. I am worried they will not tear up the walls in between as well as the shower stall and that the tile in the bathroom (which is porous and has absorbed a ll the sewage water) will not be replaced but just cleaned on the surface. I am worried there will still be lots of bad smell remaining. What are my rights in terms of demanding a satisfactory result? Must they arrange for alternative living (hotel?) before this is resolved? Is bad odor reason to break the lease? Any advice? Thank you so much!