Air in water at kitchen sink faucet.

Have a ssslllooowww drip from double wide fridge Thru-Door water outlet. Salesman at Lowe's claims this happens if air is getting into the water line.

So far I find no leak anywhere. The water at kitchen sink is getting a LOT of air spitting out with each use.

I haven't looked yet as the weather has been bad. But I think there may be air coming in at the water meter. If so, there ought to be a water leak and wet ground around the meter box. I see no water running at all, anywhere.
I would think if air gets into the line when drawing water, there would be water leaking out at all other times. The water comes from city water line.

Any ideas?