Is it Possible

Probably

But what you described is possible...

 

not.. be next to that person anymore?

 

The brushes inside the motors cause sparks that are picked up by the AM radio receiver (CB is AM radio). The best and maybe only way to eliminate this is to install capacitors across the brushes to suppress the noise. Here is a link to an article with some information for you.

 

I drove a 2 units that did that. It was something wrong with the alternators. They still charged but still made noise in my CB. But when the truck was off noise was gone.

 

there are what they call band pass filters that you can put in antenna lines, but allow certain frequencies to go thru, while blocking others, but if the noise is being generated at the frequency you want to listen to, won't help.

You may want to try a new coax to eliminate that you don't have some bad shielding somewere on the line. And you could try disconnecting the antenna at the radio to see if you hear it then, but just don't transmit!