falconbird I have had respiratory problems all my life and take daily coticosteroids and full strength steroids when necessary. Winter is often very 'challenging' with repeated infections but this year I started to be pro-active and it has worked. I do understand that what I do is nonsensical to some but until it stops working, I'll carry on. Before I leave the house to travel on public transport, visit a shopping centre or theatre - in other words, wherever there are people - I spray my nose with a couple of squirts of 'First Defence', wait a few minutes and then (turn away if you are squeamish!) put a little bit of Vaseline into each nostril. On arriving home, we ensure we wash our hands for at least twenty seconds (for the avoidance of doubt, we wash our hands after inserting the Vaseline, too!!).
This year I have only had one minor cold and absolutely no major infections. I accept this could be because I have possibly had the viruses that are doing the rounds or have been lucky but I do think there could be something in our regime and as it costs pennies per day, will continue with it. It may be of help to you?