New Poem: You decide the title

Here's a poem which deals with heartbreak, I'm having trouble with the title so I am asking for help with it. Here it is and as always, I appreciate feedback.  -Juan

Poison, the air is filled with it.

Lethal and toxic, it invades my being

No one is safe from this calamity

Except you.

This is no ordinary poison; the poison is love.

As the days go by, you carry on

Onward towards your destination

unaffected by its fumes,

is there even a heart within your chest? 

You don’t stop to smell flowers; you don’t even like them!

As I choke on the poison I see you

You walk untouched, wearing your gas mask

Perhaps I should have worn one as well

That way I wouldn't be as hurt as I am now

Although to be honest,

Even with this pain in my heart.

I remember that famous phrase

“This too shall pass.”

Even your gas mask…