Mic quality on the GSP 500 had a noise canceling effect to it, which lessened some of the range of my voice as it transmitted. ; ) The smell is probably from whatever chemicals are used to dye them. Little girls have very sensitive skin on their feet and ankles, and these just rubbed her the wrong way. This is the only flavor I drink. Im too late to return but would not recommend or buy again. The operating system needs fixes to be secure, especially critical face recognition. The only con is the swamp foot I get from them. 😌😌I have used many other brand earphones such as JBL, Sony, Sennheiser, RHA, Boultaudio, recently Boat and I am not a professional but have experience of many earphones so I can say this is the best sounding in budget and very comfortable in shape to use for longer duration 💯💥I would definitely recommend these earphones as the best buy in this price range 🔝🔝✅🔥🔥 So if I am in a noisy environment and my podcast gets interrupted I only have so much wiggle room before they max out. Our closet is 36 1/2” and this does not fit in the closet.