How did Sam feel about the time spent at Josh's house before the sneezing started?

Sam felt that he was having a lot of fun at Josh's house before the sneezing started, which indicates that he was enjoying the time spent there. This suggests a positive emotional experience, likely involving engaging activities or enjoyable interactions with Josh. The enjoyment implies that he felt comfortable and content in that environment, which would make the later disruption caused by sneezing more noticeable and perhaps unwelcome. The other emotions suggested by the other choices do not align with the scenario of having fun, as they imply negative feelings or discomfort that contrast sharply with the positive experience expressed in the correct answer.