✔ 最佳答案
空氣不流通,令人呼吸不暢順,英文係 stuffy。merriam-webster 網上字典〔
http://www.merriam-webster.com/dictionary/stuffy,3a 條〕解釋為:
oppressive to the breathing(令呼吸翳悶的)
你呢句「家裏沒窗所以不通風很焗」,英文可以咁講:
It feels stuffy at my home because of the lack of windows.(或冇窗:no windows 似乎有d誇張,所以用 lack of <缺乏>比較恰當)