<p>I agree that Thailand is (usually) a bit better than India, but personally I’m not of the opinion that a papaya salad is worth ruining your holiday for. Of course, you can buy papaya (and mangosteens, which I highly recommend and have always struggled to get outside SE Asia) and peel it yourself; that would fall within WHO advice. A smallish sharp knife with a sheath can be a surprisingly useful item when travelling. </p>
<p>I should also add that I have regularly eaten street food - but only when I’ve seen it cooked in my presence! One of the best gastronomic experiences I had in SE Asia was whilst staying in a $5 per night hostel, where the owner would take the guests out to dinner every night, invariably to places where you and the fellow guests would be the only Westerners there. Often these places were little more than collections of street food vendors. Street food isn’t the problem, it’s whether or not the food has been cooked / boiled / peeled that is.</p>