wake up to (something)

Use the phrase "wake up to ___" to talk about something that's happening when a person wakes up. For example:

I woke up to a loud banging noise this morning.

I usually wake up to an alarm, but lately I've been getting up earlier.

the smell of (something)

Talk about an odor (a smell) with this phrase:

I remember the smell of burgers grilling as I drove up.

Sometimes we use this phrase to talk about "the smell of" an emotion like fear, desperation, etc.:

The smell of fear was in the air.

"The smell of ___" acts as a noun.

(a bird) is chirping

"Chirp" is the sound that a bird makes. When parents teach their children animal sounds, they usually teach "Chirp!" as the sound that a bird makes:

A: What does the birdie say?

B: Chirp! Chirp!

Adults also use "chirp" to talk about bird sounds. Sometimes we use the form "chirping":

Do you hear that chirping? What kind of bird is that?

Some insects, like crickets, also "chirp":

The crickets are chirping pretty loudly tonight.