I have never used a MeLuna, but I bet boiling would get rid of any smell, or most cleaning methods. Also, have you considered that the smell may not be caused by the cup, but by you? In that case I would visit a doctor and get checked out. Hope that helps!

I tried boiling it and it still smells :( and I went to the doc this morning and she said all is fine :) so I am not sure why the Meluna smells. None of my other cups (all silicone) smell. Does my body maybe just not like the TPE that the MEluna is made from?

Well that is odd. I have no idea. You might try some more cleaning methods like others suggested. Or you could email the MeLuna company and ask them about it?

I use MeLuna as well and have never had problems with this, but I would suggest a soak in hydrogen peroxide, I've used it once or twice when I wasn't able to boil my cup after a period and my cup didn't seem to suffer any ill effects. Boiling/soaking in a vinegar-water mixture might help too, but it also might just make your cup smell like vinegar, and shouldn't harm the plastic. You could also try cleaning it with rubbing alcohol; my boyfriend's suggestion when I asked him if he thought vinegar would harm the TPE was vodka or an alcohol-based mouthwash such as Listerine. It really depends on what is causing the smell, though, and if your body reacts negatively to the TPE you probably don't want to be using it anyways.

That is odd. I have both silicone (Diva) and TPE (MeLunas, plural) and have NEVER had smell from the MeLunas but have once in a blue moon with the Diva. *shrugs* Do you have another cup you can try right now, this cycle to see if maybe there's something different for you?

i've had that issue with my ladycup once but never with my meluna. to that day i don't know what caused it. but after cleaning it (and it still smelt bad at that point) i left it lying around on my desk to air out (not in a bag) and the smell was gone when i picked it up for my next period.

You said you were feeling irritated - is it possible you've picked up an infection and that's causing the smell? :/

My ladycup has a weird smell to it from the start. but its silicone, and it smells like silicone, so i guess its cool

Okay so here is what I have tried so far. I have boiled in plain water, boiled with vinegar, soaked with vinegar, soaked with baking soda/water. I am going to go get rubbing alchohol tonight after my soccer game to see if that will work.

I have seen a doctor because I was worried about a possible infection but she has assured me all is alright with my lady bits, no infection.

I normally switch from my large Yuuki to my Meluna near the end of my period because my cervix gets lower near the end and the stem on the Yuuki bothers me a bit so the irritation I mentioned in the OP is nothing new or out of the ordinary. The smell on the Meluna is new though, and it is only on the Meluna. After I discovered the smell on the Meluna, I switched to a diva worn inside out and it didn't smell after being used.

I am starting to think that my body just doesn't like the TPE. :(

I know you mentioned thinking your body just doesn't like TPE, but I wanted to throw out one more smell suggestion for the record. I've had my silicone cup start smelling like old meat when I've forgotten about it at the end of a period. The only thing that got the smell out was tea tree oil. I didn't put the oil on it. I put some on a very small bit of a cotton ball and upended the cup over it. The fumes got rid of the smell (and my cup smelled like tea tree oil).

Thanks! I'll try that. The rubbing alcohol made the smell a little less strong though.

Out of curiosity, how long did you leave your cup over the cotton bal with the tea tree oil on it?

I'm thinking that I left it that way for about 24-36 hrs. A shorter time frame may have worked too, but I didn't need to wear it, so I just left it sitting on the counter.