A Belfast man has shown that a positive lateral flow test can be achieved simply by drinking ‘cs’. Matthew Thompson, a reporter at LBC radio in London, investigated claims that some children had been using popular fruit drinks to distort the results of their tests.
Thompson tried it himself at home and it worked.
https://www.belfasttelegraph.co.uk/video-news/belfast-man-creates-positive-covid-test-with-fruit-drink-40603083.html