Does the product consume a lot of power?

Regarding its electrical consumption, the purifier can be set to modes that consume less or set to be on for a shorter time. 

Can the purifier take away strong odors like the nail monomer smell for people who do nails?

It will help somewhat, but for really strong odors like nail polish and acrylic, there’s only so much any air filter can do. If you have good cross-ventilation, you’ll probably notice at least some difference running this purifier on the highest setting. You can also add a few drops of essential oil to the diffuser to help disguise the nail’s chemical smell. 

Does this help with pet smells as well?

Yes, the purifier can work well and refresh your room also it offers the option of putting aroma drops so which can be of great help.