When Chris Rosati, a man currently suffering from ALS, or motor neurone disease, gave two young girls $100 to help spread kindness, he had high hopes that the girls would use the money well.

But Cate Cameron, 13, and her sister Anna, 10 surpassed all expectations when they used the money to help feed a village in Sierra Leone, Africa.

The girls were eating at Elmo's diner in Durham, North Carolina several months ago when Rosati saw them and handed them $50 each to do something kind. Rosati explained that his actions were all part of the "butterfly effect."

"It inspired me. That makes you want to do something good with that money," Anna told CBS.

So when the girls' father volunteered for the Peace Corps in Sierra Leone, they decided to give him the money so the villagers there could hold a feast as they celebrated being Ebola-free.

Rosati had actually forgotten about his $100 donation when the Camerons sent him a photo of people from Sierra Leone holding up signs that read, "Thanks a lot for spreading kindness - Chris Rosati."

Since being diagnosed with ALS, Rosati has done a series of good deeds in hopes of improving people's perceptions about kindness and generosity. In January 2014, he planned to steal a Krispy Kreme donut truck so he could hand out free doughnuts in his hometown at Durham.

The Krispy Kreme company got a hold of his plan and even sent a truck filled with their goods so he could fulfil his dream and hand out free donuts for a day.

Rosati also spearheaded the non-profit organisation Inspire Media, which started the Big Ideas for the Greater Good (BIGG) challenge. BIGG encourages students of all ages to come up with unique and bold ways to enrich the lives of other people, which they will later help turn into reality.