Sorry, I may be descending into paranoid overthinking here 
I have "a cough". No fever, just a bit of an under the weather feeling. Under the new rules, I'm supposed to stay in the house and stay 2 metres away from my family members. The 2 metres thing is pretty facile, as the studies I've seen from China etc suggest that the virus can travel in the air a good deal further than that - but OK, we'll follow the NHS advice. So when I cough, am I supposed to cough into a tissue and bin it, every single time? I would be getting through an entire rainforest every couple of hours
. What about people who are out and about, who suddenly acquire a cough? Is everybody supposed to carry a sack of tissues around with them?