Chiron was always impressed at how Tom greeted him the krogan way. The human's ability to understand other cultures, was one of the reasons why Tom was his friend. He laughed at the human's statement at the spacesuit. He also chuckled at his comment about drunks.
"You hate drunks? Do you know how many drunks I've had to deal with...and their projectile vomit?" Chiron retorted with another laugh.