Re your article on travel etiquette (The ultimate guide to travel etiquette: how to handle 36 tricky situations, from manspreaders to smelly armpits, 4 August), it’s totally wrong to advise people not to give up seats for a woman any more. Helen WalkerLondonTo your list of dubious travel behaviours, I’d like to add constant sniffing and its more guttural and nauseating relation, snorting. Judith MilburnHartlepool, County DurhamI enjoyed your guide to travel etiquette. On two occasions a woman offered me a helping hand as I descended the stairs on a bus. On another bus, a woman offered to move so that my wife and I could sit together.