I am a fan of woolx. We purchased several items for a trip to Svalbard earlier this year (winter trip) and loved how they kept us warm in -40F weather.
I thought I would try the boxer briefs for a trip to South Africa and Europe. They performed well in both winter and summer weather. I stayed dry even on a 4-hour train ride without air conditioning in July.
They claim that these will not hold odors even after several days. I agree we had several extended periods due to traveling and they never smelled. The only difference between these and a freshly washed pair was the just washed were fresher due to the detergent.
My nephew wanted to try a pair, I bought him a pair and he loves them.
They are not cheap, but they are worth the price. If you can get them on sale as I did, you will save some money. Even then, they were $22 a pair. These aren't your dad's fruit of the loom, they are much better.
You can see my detailed review of the clothing for the Svalbard trip on my blog and social media.