Nursing programs are stressful learning environments, and students are expected to maintain high academic performance to successfully graduate. Cognitive test anxiety has been minimally studied among nursing students, including how to successfully manage. The Cognitive Test Anxiety Scale (CTAS) was administered to 31 students before and after a high-stakes nursing examination. The intervention was inhaled lemon essential oil delivered via a personal nasal device. Neither the control nor the experimental group demonstrated a statistically significant change in the CTAS score from pretest to posttest (P = .19). More quantitative studies are warranted with undergraduate nursing students, the CTAS, and aromatherapy to reduce the burden of cognitive test anxiety.