From Hugh Kolb, Logie Coldstone, Aberdeenshire, UK
You report on trypophobia, a fear of holes (18 January, p 38). I am puzzled that you didn't link this to the image a few pages earlier of rather unpleasant spotty bacterial patterns on agar gels (p 28). Isn't it likely that some people's disgust at spots is related to a reaction to decomposing food with bacterial and fungal colonies on it?
