You hear a man talking to a group of people who are going on an expedition into the rainforest. What does he advise them agai

Man:   Because you need water for various reasons, you often end up making your overnight camp by a river. Providing you take care to keep insects away, this can be as healthy a place as any. Much as you might feel you need a good wash, one trap not to fall into, though, is the use of soap or shampoo. These may make you feel good, but actually give off unnatural smells in the jungle which act as a magnet to insects, thus increasing the chances of your getting bitten. Better to actually go in for a dip, being careful to dry off and re-apply your anti-insect cream immediately afterwards.

Woman:  So tell me again, what time does that train get in? I see. That’s a bit late, because I wouldn’t really have enough time to get from the station to my meeting. What about the one before that, what time does that one arrive? Yes, that sounds better. Is it necessary to book? Will you see to that for me and leave the tickets on my desk? No, on second thoughts, I’ll be at my mother’s for the weekend. Can you post them to me there? It’ll save time all round. Thanks.