Some stuff to read...

Find professional help on cleaning and who is responsible

https://www.advancedbio-treatment.com/abt-blog/who-is-responsible-for-cleaning-up-after-a-suicide-in-hud-housing-a-rental-apartment-or-a-lease

Steps to do after tenant's death

https://rentalsinboise.com/property-management-blog/what-to-do-when-your-tenant-turns-up-dead/

https://trepryor.com/blog/landlord-strategies-when-a-tenant-commits-suicide-or-an-unattended-death/

At least your landlord insurance could cover remediation, biohazard or loss of rent, etc.

 

Perspective from a survivor

https://www.reddit.com/r/legaladvice/comments/8gynwv/my_mom_commited_suicide_and_now_her_landlord_is/