Slightly strange flavour

[Old Bloater]

Hi
I can't be the only person to have experienced this!
Of 4 recent brews of the same recipe, 2 of them have quite a noticible "taint" or additional flavour.
The clarity is OK, I really cant see that it's an infection (but happy to be told otherwise). It's very difficult to explain without the skills if Ox Clark or Jilly wotshername but I would perhaps describe it as "flowery/metallic".
It is drinkable and I don't seem to put extra strain on the septic tank (if you know what I mean) but I would love to get to the bottom of it. (no pun intended)
Could it be from "oversparging" the hops or squeezing them or is it a mild infection of some sort and is there a test of some sort.
All ideas gratefully received.
Cheers
OB

[Dan]

I would reccomend against hop sparging ive had very little sucsess from it.
If it is a taint from washing out the break material from your hops it will taste of Solvents and medical TCP

[Dan]

vossy had trouble with metalic taints and put it down to his rusted plate chiller. he might be on to confirm this later.

[Vossy1]

Yep, rust in my plate chiller

[mysterio]

I'm getting metallic flavours from my current CO2 cylinder.