You can definitely smell if your tap water supply has high levels of chlorine. By no means is it like walking into a public swimming pool but the faint odour will certainly present itself. I find that I notice it if I pour a glass of water (fresh drawn, agitated water), it’s there ever so briefly but if you stick your beak into it and have a big old drag you wouldn’t notice. As for the extent it’s affecting my beer, it’s hard to describe. I am getting a pronounced chemical aftertaste to the beer, not harsh or bitter but it lingers and builds up the more you sip, for some reason much more prevalent in beers with high levels of galaxy hops (yeah, figure that one out!). It’s far more notable the warmer the beer, it’s not quite ‘band-aid’ in mine but it’s not something you would want to pay for the privilege of trying. And as @Matplat has mentioned, it doesn’t f##king disappear!