On the 19th of January 2022
Toon Aerts tested positive in an out-of-competition test for Letrozole. Three days previous he raced the Flamanville World Cup - the last race where his result was not removed - and his management warns riders against what could've been a source of the substance.
This comes as
Shari Bossuyt, female rider of Canyon//SRAM Racing, tested positive for Letrozole as well on the 19th of March this year during the Tour de Normandie, exactly 1 day after the race had finished in the town of Flamanville. The similarity between the two cases was astonishing and Toon Aert's management believes that something in the area is what led to the ingestion of Letrozole. They believe that dairy products could've been the source.