I'm not so sure..
I think that perspective needs to be maintained, but as the transmission range is 1m, it stands to reason that if you are in crowded/cramped places with more bodies, your probability of walking into the leftover droplets of someone's sneeze is a good deal higher.
Also, say you are not working, and you go to Sainsbury's mid-day... For the most part, you really can keep your distance from people. You would still be in contact with the cashier etc but you could stand back and stay away from people most of the time. If you are on the Tube, how many people can potentially actually sneeze in your face?
As I work in the NHS where there's good awareness that pregnancy is a high risk factor, I've noticed people have been very good at maintaining distance if they're feeling sniffly (but not 'swine flu' sniffly, more likely allergy sniffly). These sensible social distancing measures surely decrease risk?
Yes, you could be unlucky and sit with someone who is incubating and catch sf, but to me, it's like wearing a seatbelt or avoiding soft cheeses or not running into the road without looking. We have to be risk aware.. and I can see, looking at it rationally, that avoiding crowded places and public transport is a relatively sensible way to reduce risk to people potentially at high risk.