The backgrounds is a boy's dead from a moldy place he and his family had to live in: https://propertyindustryeye.com/coroner-describes-toddlers-d....

As an example of this kind of rule from a place that currently has them, the basic coverage of California’s implied warranty of habitability are covered on pp 48-50 of this document:

https://www.courts.ca.gov/documents/California-Tenants-Guide...