Kitten ate strawberry-flavored smectite, then threw up thick yellow fluid with food after eating meat

Based on your description, the cat shows vomiting and diarrhea, which could be from indigestion or acute gastroenteritis, but infection with feline panleukopenia cannot be ruled out. It is recommended to withhold food promptly and take the cat to a pet hospital for examination to determine the cause and apply appropriate treatment, usually injections.

It is not advisable for the owner to blindly give the cat medication, as this may worsen the gastrointestinal burden and vomiting.