Heebie-jeebies

It is a state of extreme nervousness caused by fear, worry, or strain. This emotional response is evoked when one comes across unpleasant stimuli (also termed as getting the jitters or the willies), but it is a distinct emotion from disgust.

Reference:
Blake, K. R., Yih, J., Zhao, K., Sung, B., & Harmon-Jones, C. (2016). Skin-transmitted pathogens and the heebie jeebies: Evidence for a subclass of disgust stimuli that evoke a qualitatively unique emotional response. Cognition and Emotion, 31(6), 1153–1168. https://doi/10.1080/02699931.2016.1202199