Have your tenant run an ozone machine according to the directionsYou can get one on Amazon for approx $50In a week there is a good chance the problem will be solved 

I have this Cash Flow Machine for Sell In Phoenix if you're interested.

Should the tenant overload the machines, the damage could be to the machines themselves and/or the property (flooding, fire).

In terms of some basics to know, I'd say 1. make sure any laundromat you consider buying is in a great location with renters in the area and good visibility2. know the condition of the machines, plumbing, electrical and boiler before you buy3.

I don't know if it's even possible to insure those things anymore but they are probably rental machines until they inevitably get washed away.

Just like putting money in a slot machine, playing craps, or betting on red there will always be some wins, but that sort of investing it not a good business model.

I started a 14 day free trial with Deal machine. 2 days I've found 80 properties I want to go after.

Once you start the flipping machine, there’s a pressure to feed the machine a pipeline of properties.

Your story makes me wish I had a time machine haha.  

But it took years to get my systems set up and thousands of dollars to build my marketing machine.