The potential for this viral form of civility to spread all over the country should be apparent. Think of the potentially disastrous consequences if all Americans became as respectful and considerate as Idahoans. People being nicer to each other might eliminate the entire mental health industry, resulting in a huge loss of employment for those in the mental health provider community, for instance. Or with all this friendliness going around, people might decide that they enjoy spending time doing things with each other and quit watching TV and buying lots of useless junk made in China. I have a few suggestions.
Friendliness germs are everywhere.
Use appropriate caution when speaking to Idahoans. You could have your state s Surgeon General or the weather bureau issue Severe Politeness Warnings. You could insist on quarantine, so that infected visitors would have time to rest and get over the infection before they return home and give the kindliness bug to everyone around them. Or maybe you could bottle it and ship an entire batch of the Idaho Infection to New York. Maybe we need a good epidemic.