Why don't you put CO Detectors in your buildings?

[Max James]

I have equipped my buildings with CO detectors here in Ohio.  After brushing up my leases and thinking more about I am wondering if this puts me liable if there were to be a CO leak and it were due to detector malfunction from the residents.  

It is not required in Ohio to have them in your buildings and as a former tenant, I do not recall any of my old places of living ever having a CO detector when I was renting. 

Should I remove the CO detectors?