Based on the context and the answer, generate a question. 

Context: Now that he was able to work without the group 's distraction , he was lost without it . He had discovered the basement a month ago while exploring their new acquisition , but still had n't gotten used to the crisp , spine - chilling air down there . At first he could n't spend more than an hour down there , but now could withstand at least two before he started hearing things .

Answer:

The man felt a bit unnerved and and that something eerie and horrifying might happen .



How may the man have felt when he could feel the cool , spine - chilling air ?