ANTHONY ROSE admits that he has been guilty of giving red wines 'Old-MacDonald-and-his-farm-like compliments' when in fact, he was experiencing the whiff of brett. At a recent seminar led by oenologist Pascal Chatonnet on 'malodorous wines', Rose found that as well as brett, the little-known, environment-taint-led TBA is also responsible for whiffy wines, and is caused by contamination from other materials in the winery, such as oak barrels and wooden roofs.