Does the water clear up after a minute of running (two minutes if you turn it on low only)?
It's probably the hose inside equivalent of the "new car smell". The water sitting in the hose for days picks up chemicals from the hose, more so if the hose gets hot lying in the sun.
(After awhile, after losing the chemical content, the hose gets brittle.)
The disadvantages of crab apple trees. In summer, the apples are too sour to pick and eat. In winter the birds come and leave dropping all over the place.