Monster Allergy

The series follows young boy Ezekiel Zick (nicknamed Zick) who suffers from various allergies and has the ability to see the invisible monsters that live among us. Along with help of his best friend, Elena Potato and his talking cat, Timothy, Zick hopes to hone his powers to one day become a Monster Tamer just like his dad, Zobedja Zick.

(Source: Wikipedia)