Many years ago when AIDS was considered a fatal disease gay individuals put property in Irrevocable Trusts to ensure that their lover (who at that time could not be a legal spouse) would get their property and that their estranged families would not try to take their assets. 

There is an outbreak of a contagious disease in the area that they live in.

It’s all fun and games till the tenants get aids . in all seriousness most pornographers have some form of sexual disease .

My reasoning for doing this is actually to use some of my “retirement” now instead of risking dying or getting some type of disease later on that keeps me from enjoying life to the fullest when I’m too old to walk around big cities and climb mountains.

A diseased tree is about to fall on the neighbor and the sidewalk is broken in two places. 

of course I let her know that deposit does not count as the rent , but she got short timers disease.

Health RisksSome pests can carry diseases or trigger allergies.

@Steve Babiak I think you're referring to: http://www.biggerpockets.com/forums/52/topics/88268-what-should-i-include-in-my-lease The link included on housekeeping was no longer good, but it appears to now be here:http://www.wfha.com/wp-content/uploads/2013/10/housekeeping_policy.pdfSo Hoarders are considered a "disease" and is being recognized by the American Psychiatric Association so it's now a protected class?

I used to live out by the NH seacoast and always found it amusing to watch the miles upon miles of cars/SUVs loaded with every kind of watercraft known to mankind rolling slowly up the 95 corridor in a near logjam every weekend from June - August.

To combat this "disease", take action steps such as contacting agents and bidding for houses.