I was irritated they didn't inform myself, my property manager, inspection guy, etc.  

I am highly irritated that I paid this company $99 a month to not communicate with me and lead me as they are the professionals.It was 7 days PAST the lease expiration date per the signed lease for the tenants and I had no clue if my tenants had renewed or planned to move.

He recently had a death in the family and is irritated that I won't give him time for to deal with that, but this has been a problem for long before the death and now he won't return my texts or answer my phone calls. 

The worst thing you can do is be seen as an unreasonable and irritating component.

But again, it was irritating to have the land keep going up and up for the lease. 

I'd avoid doing this in units with shared ventilation as there is a potential risk of irritation to someone's lungs with prolonged exposure, especially if the person already has existing lung disease.Ozone machine will run about 60 bucks on Amazon.

Some people seemed irritated by how much customization they had do to the CRM to fit into real estate use cases.If there was the perfect real estate CRM, how do you think it would look like?

Would you ever have imagined a national lockdown stretching months for a flu that had a mortality rate a fraction of heart disease annual mortality rate?

You don't know at this point exactly what's going on, whether you just have an irritable tenant, or if the Lease is being violated.

Having roommates can be irritating, but as you said duplexes are more difficult to find in most markets.