Yeah IR is interesting.. Credit to JoeHank for this: (https://www.thcfarmer.com/threads/infrared-from-security-camera.49492/ )
One of the most overlooked but most important specification of IR illuminators is frequency. Most IR illuminators on the market are not one-hundred percent invisible to the human eye. Illuminators operating in the ranges of 750nM and 840/880nM emit a soft red glow when looking directly at the illuminator itself. For true stealth operation, select an illuminator that works at 940nM or greater.
-if you go on and read the link it elaborates that distance from the cam would need to be very close indeed..
From what I can gather.. IR is less likely to cause a serious problem. But it may?
As far as power strip and heater/ac unit lights etc - they definitely can cause serious problems.