But, the books and courses I buy now are on improving my mindset and attitude and salesmanship and motivation and learning about body language etc.

People can smell its not he real deal, so are being polite, but not going to invest their money.  

% of body fat? 

What do you do when you find a dead body or a live intruder in someone else's STR property?

Not sure it that is applicable but it something that a real estate investor should know as part of their body of knowledge. 

I bought my first investment property in 1994 - it had been on the market for nearly one year and smelled of cat pee - my plan was to flip it, but it took 6 years to fix it up!  

... or like Pavlov's dog you get excited when you smell cat piss, poop, cigarette smoke, mold, etc. because it all smells like money to you.

Even if the mice die in the walls, their bodies dessicate pretty quickly, so if there is a smell, it would go away reasonably fast.IMPORTANT:  don't let them get bad enough to get into the insulation of the oven, or it WILL ruin the oven, and one day they'll turn the oven on and the STENCH will drive everyone out of the house.  

$$$ that term you hear investors say "smells like money" depending how crafty you are and how good your negotiating skills are this could provide an opportunity to really come on top. you just have to determine what your tolerance is and have a plan. 

(I cannot stand cigarette smell) In any case, my landlord tried getting rid of the odor, which was always temporary and basically smelled like a "pretty smell" mixed with the cigarette smell.