ASDA soda costs 55p.
Wilko Original White Vinegar Spray costs £1.50.
Stardrops White Vinegar Spray is 89p from The Range.
Dri-Pak Pure White Vinegar is £2 from Ocado.
Other suggestions from Mrs. Hinch fans included the use of soda crystals, powdered toilet cleaner, denture tablets, and boiling water.
Fiona Roberts replied: “It’s entirely possible it’s coming from the overflow part.
“Spray some bleach in that part and go.
“If it doesn’t, unscrew the hole area of the sink plug and clean it.
“You’ll be surprised how much dirt there is and it stinks.”
Kelly Elliott said: “Soda crystals and let sit for a couple of hours, then just pour hot water over it.
“Make a bunch of crystals in your sink.”