Final answer:
Clients with respiratory conditions may find aromatherapy with essential oils to have adverse effects, potentially triggering respiratory distress, making it contraindicated for them.
Step-by-step explanation:
A nurse educating staff about the use of essential oils for aromatherapy should be aware that certain patients may experience adverse reactions to these oils. Specifically, clients with respiratory conditions such as asthma may find that the strong scents can trigger respiratory distress or exacerbate their condition. Therefore, aromatherapy might be contraindicated for these clients. While it is also important to consider clients with skin allergies, hypertension, and diabetes when using essential oils, those with respiratory issues are at a higher risk of complications due to inhalation of strong fragrances.