Flatmates Tracy (Kate Ford) and Beth (Lisa George), who have so far not seen eye to eye, will pretend to be a lesbian couple to scare off cash-strapped Steve McDonald (Simon Gregson).
"They are determined to hang on to the place," a source told the Daily Star. "It will be hilarious and the girls will have a great time filming - it won't be long before Steve begins to smell a rat.
"When Tracy is overwhelmed by the smell of kippers that Beth cooks one morning, the pair realise putting them round the place will guarantee no-one will want to buy it.
"The scenes will be some of the funniest ever and show Corrie is still the best when it comes to giving viewers a good old chuckle."
When one interested buyer visits No.13, Tracy apparently says of the fishy smell: "It's always been here - it's even worse upstairs!"