@Dominions Son
Also, have you tried talking while laughing, it's not easy to do and be understood.
I have, and it is possible. The hard part is laughing talking and breathing all at the same time.
That's why I've always preferred 'chuckled', as it's not nearly as boisterous as laughter, and you can easily gently chuckle while speaking. Guffawing, not no much.
As D.S. suggests, spelling a vocal sound is similar to putting it into air (single) quotes, as you're specifying that someone's being sarcastic, rather than actually laughing (or making ANY humorous sounds).