No hairspray!

I find this No weapons sign rather incongruous to the location. At first glance, you think it means:
No Guns, No Knives, No Hairspray?? But upon further perusal, you get the No Bear Spray or Pepper Spray. Since bear spray is relatively common to those of us who do actually live in bear country, we think it should be allowed in cancer therapy locations and agree that hair spray should be the one to go.

PS: It was 99 degreesF (40C) today. Hotter forecast tomorrow.