I had a hard time with the poll. We've never had a problem with odor during anal play. I think at least in part, the way one's digestive system has a lot to do with "detritus" and odor during anal play. GROSS WARNING: People who have soft, sticky stools will have more detritus and more odor in their anal play, because sometimes small amounts of material are left behind after a bowel movement.
Also, one's diet, as well as food choices and even timing have a lot to do with whether anal play will be fun or a bit of a mess. Also, knowing when "your butt has the night off" is a good thing to realize. Sometimes that part of your body just isn't going to co-operate, and knowing when you aren't in the right body set for anal and then saying NO is really important.
I tend to have firmer non-sticky poops (no other way to say it, I guess) and they leave little behind in the rectum or anus at all. A healthy, well working GI system shouldn't leave much of anything behind, but there are things people do to actually increase the chance of improper rectal emptying. I never
use an anal douche or enema, because I only have anal sex if I know things are empty there, and I make sure my body is functioning properly so that it can empty properly.
Some things to keep in mind; 1) Some people will actually cause a gastro-colic reflex when using an anal douche, which causes material higher in the GI tract to move down when the douche or enema is administered. Try not using them for a few weeks and see if that helps. 2) Diets TOO high in fiber, especially soluble fiber may promote really sticky poops, which can add to the issues you were talking about. Yes, fiber is good for you, but too much can cause problems, not just with anal sex, but with vitamin absorption. 3)Time your anal play right. Don't have anal sex or anal play if it's been more than 12-24 hours since you have had a bowel movement, or if you feel you may have one soon. I honestly think one of the reasons My Man doesn't allow anal play on himself is that, unlike me, he has an average of 3 to 4 stools a day and they are sticky and he just thinks it isn't worth the mess. I don't think it's the main reason, but I think it's part of it. He could
change this pattern by TOTALLY avoiding dairy product (like I do) not eating peanut products (which I also do) and avoiding alcohol at all times (which I also do.) But, it isn't worth it to him.
4) Don't ever "hold it" for long. This can lead to improper emptying of the lower bowel and problems later on, not to mention pain, gas and nausea. If you have to go, GO!
My diet is limited by allergies and GI issues, so I have always been very careful about my GI system and actually can't tolerate too much fiber. I think finding the perfect amount, not too much and not too little, while totally avoiding dairy products
(because they stink
because they are never broken down properly by humans) and perhaps avoiding alcohol and excess fiber may help.
This is what works for me, and I can't guarantee it will work for everyone. Mileage and alll that stuff.