Examine the latin.
"Chloro" means "colored". Chlorine atoms are present in chloroform. The element Chlorine is a greenish yellow gas. Chlorophyll means "colored leaf". Chlorophyll is a green pigment. The term "chloro" refers to the color green, even though chloroform itself is colorless. Technically, both compounds are organic, meaning they contain Carbon. This is really the only thing they have in common."
More to the point, going to Google and entering "chlorophyll" does not take you to any pages on "chloroform." Well, except now that Cindy Anthony has claimed it did ironically it does as it relates to her claim and the case.
And if you Google "chlorophyll" and "dogs" you'll find many helpful pages on the beneficial effects on dog odor and even tablets and liquids you can buy. Nothing that would lead you to chloroform.
This myth is BUSTED!