In article om, "stinkeroo" wrote:

Thanks for help. I read that it is due to "air in water". Where that
air would come from, I don't know. Why is it only in that faucet? Is
that ominous?

It's really bad in that faucet. But only that faucet.

Air bubbles per se are not very ominous. It may be an
intentional feature of that faucet in fact.

However, temperature changes can also cause effects
like this. So you might want to check that no part of
the pipework serving this faucet is exposed to the
elements such that there's a risk of the pipe freezing
and bursting.

I suppose lost/missing insulation could cause such an
effect too.

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