I didn’t know what cordial was until I came to Australia, and had to look up the UK version of squash. Seems to be the same: a concentrated fruit extract added with water or other things – I prefer the lime.

Tesco has recalled one of its own-brand squash drinks after customers complained of a ”disgusting smell” and parents raised the possibility that it could have caused their children’s stomach upsets.

The supermarket said it had withdrawn the Tesco No Added Sugar Double Concentrate Apple and Blackcurrant 750ml and 1.5l products and was investigating complaints.

They later said a flavour additive had been added in error to the squash, but said it posed no food safety risk

A post on the PlayPennies website alerting users to the recall prompted a flurry of replies from those who said they had opened the squash and noticed an unusual smell while others reported their children had vomited after drinking it.

One poster wrote: ”I bought 2 bottles of this squash over a week to a fortnight ago. We opened one and it smelt absolutely disgusting … the only way to describe the smell was that it had been mixed with used toilet water …”

Clairedavies85 said: ”Had this other day. The smell was horrendous but drank it anyway as I thought they just changed it. Since then both my daughter and partner have had bad bellies.”

A Tesco spokesman said: “A flavour additive, which is not part of the ingredients for this product, has been added in error. The additive is called Dimethyl Disulphide and is a common ingredient in food products.

“It is an approved additive and poses no food safety risk. However, it does have a strong odour, similar to garlic, which customers are likely to find unpleasant.

“We have withdrawn the product from sale. Only products bought since the New Year may be affected, they will have a best-before date of October 2015.

“Any customers can return this product, open or unopened, to any Tesco store.”

The Food Standards Agency has not issued an alert, explaining that it would only do so if it was aware of a ”food safety implication.”