Number + 股 + Noun
股 (gǔ) is a measure word used to count streams, currents, or surges of force, energy, or smell. For example, 一股强大的能量 means "a surge of powerful energy." It is also used in financial contexts to mean "share" (of stock).
突然一股冷风从窗户吹进来了。
Tūrán yī gǔ lěngfēng cóng chuānghù chuī jìnlái le.
Suddenly a gust of cold wind blew in through the window.
她感到一股强大的能量涌上心头。
Tā gǎndào yī gǔ qiángdà de néngliàng yǒng shàng xīntóu.
She felt a surge of powerful energy well up in her heart.
厨房里飘来一股饭菜的香味。
Chúfáng lǐ piāolái yī gǔ fàncài de xiāngwèi.
A whiff of the aroma of food drifted in from the kitchen.