Why does my sous vide smell unusual the first time I use it?

A slight smell on first use can happen when a heating appliance is new, but it should fade quickly and never be strong, smoky or chemical-like. If the smell is sharp, persistent or accompanied by smoke, switch the appliance off and stop using it.

1. Run the appliance in a well-ventilated area with the container set up normally, but without food. The expected result is that any mild first-use smell becomes less noticeable after a short period.
2. Check that there is no packaging, sticker residue or protective film left on or near the appliance. The expected result is a clean exterior with no material touching hot parts.
3. Make sure the stick is not running too low on water. The product has boil-dry protection, so low water can create an overheated smell or cause a cut-out. The expected result is a safe water level throughout the test.
4. If the smell remains after a brief first use, unplug the unit, let it cool and inspect it visually for damage or discolouration. The expected result is no visible problem. If you see one, stop using it.
5. If the smell is still present on later uses, or if you are uncertain whether it is normal, contact the retailer or store where it was purchased.

Do not use the appliance if the smell becomes stronger during operation, especially if it is combined with heat at the plug, melting, smoke or unusual noise.