She sounds so nasal and whiny, she has a very ugly voice.

His voice came out sounding furry and nasal.

It sounded crisp and nasal, the voice of a rather sporty gentleman.

He at least achieved volume at times, but his upper register sounded thin and nasal.

His nose was encased in the mask, so his voice sounded thick and nasal.

"Good morning," he responded, politely dabbing his chin cautiously and sounding a bit nasal.

"No." The second voice sounded nasal and flat.

Their speech may sound nasal, and their sense of smell may be impaired.

Everyone is getting a cold and sounds nasal and scary.

With his nose pinched shut, his voice sounded nasal and foggy.