The Pura 4 plug-in diffuser turns out to be pretty useful gadget, and a lot of fun. The basic functions are what you’d expect from any plug-in diffuser—you start with a scent cartridge and the ...

For a more advanced plug-in diffuser, try the Pura plug-in diffuser, which offers a large collection of scents and handy smart features. I still enjoyed my time with this new plug-in. Here’s ...