A dietitian put me on a simplified version of the RPAH diet 9 months ago. I'm fine on a very restricted diet, but am finding that fumes (strong flowers and incense) are immediately producing the same symptoms. As a nun, there are times when I can't avoid them. Do you have any experience with nose filters, which I see advertised on the internet (I was looking at the First Defense Nasal Screens). I wondered if they would do the trick, and enable me to be exposed to some fumes without being hit by the ghastly symptoms. It would be great if they work, as I’m currently having to sit outside our part of our Chapel for Mass when the priest uses incense, and I’d much rather be inside. (Even so, I can still smell the fumes in the room almost 24 hours later, and it is affecting my health for the rest of the week ­ brain fog, fatigue and sometimes a migraine too.)

Two months later ... Good news! The nasal screens have worked really well for me. I’ve been able to try them 5 days in the past week. It took some getting used to putting them on correctly so my breathing wasn’t impeded, but I’ve improved with practice. I have been able to remain at least an hour in a room with incense, strong solvent glue, and even clean the brass with Brasso, all with no ill effects. During that week I had one day when I was exposed to Pledge furniture polish for about 5-10 minutes and didn’t have the nasal screens on. The result? Within minutes I was confused, unable to think clearly, rather irrational, and then wasn’t up to doing much for the next day or so.

I’m really delighted with the result. It means I should be able to safely make a trip to an important meeting in Australia, which I was a bit apprehensive about, as the thought of being in a planeload of perfumed bodies didn’t exactly please me. If anyone else has a really bad scent sensitivity that is preventing them from doing important things, I would recommend they give the nasal screens a try. The manufacturer said you can actually wear a pair for up to 24 hours ­ I haven’t needed to try that, as I can usually control my exposure, but I did have them on for nearly 13 hours one day.

I eventually obtained mine through the US Company, as the Australian Distributor didn’t reply to any of my emails. They only took 5 days to get to me in NZ, so that was fine. - by email, NZ