Distance Between CRTs

[Outland]

Is there a minimum distance that CRTs can not be operated within?

I have two CRTs, a 20-inch TV and 17-inch monitor, in relatively close proximity. I don't have them switched on together, but can escaping magnetic fields from one cause permanent damage in the other?

When I was little, I remember turning on two CRTs close to each other would cause interference.

I remember reading a thread a long time ago about someone who put two CRT monitors next to each other, and one of them (the weaker one I suppose) developed permanent distortion on the side next to the other monitor.