Spurious RF emissions?

[WRTC928]

I don't want to ask this question in an amateur radio forum because I'm afraid I couldn't get a straight answer, so I'll try it here. If I understand correctly, any "spurious emissions" will not be retransmitted by a repeater. It will pick up the strongest part of the signal and retransmit that on a different frequency. So, my question is, how much harm can spurious emissions from a 5 watt HT actually do? Yes, I understand about the possibility of creating interference in a frequency allocated to public safety or commercial radio, but realistically, how likely is that? Hams tend to think of these things from the standpoint of tall antennas and high wattage, and you likely could muck up stuff with a 50' antenna and 1,000 watts, but a 5 or even 10 watt HT doesn't seem to have much potential to cause trouble.

Do commercial LMR and public safety radios have filters to eliminate the "fuzz" created by a low-power harmonic? I assume the technology exists, and if I were building a $1,200 radio for a police department, I'd certainly include it. I'm not arguing that a "cleaner" signal isn't better and more desirable, but I suspect the "dirty" signal from a cheap HT isn't going to actually matter to anyone.

I already know @OffRoaderX's opinion  but I'm curious what the rest of you think.

[nokones]

If I recall, one of the reasons why the Television Industry wanted to migrate to digital emissions so they can be creative in using the same bandwidth of their licensed broadcast channel and cram in other broadcast channels in the same bandwidth.