asfixiar

Por fin dejé de fumar, porque me asfixiaba cantando y bailando.	I have even quit smoking because dancing and singing left me all out of breath.
Yo solía venir aquí cuando el mundo me asfixiaba y se hacía tan pequeño que no podía respirar.	I used to come here... when the world closed in and got so small I couldn't breathe.
Era víctima de una especie de alucinación; me asfixiaba; sentía necesidad de aire puro.	I was having a sort of hallucination; I was suffocating; I needed some fresh air.
Me la diste para perdonar, y guardé por meses y meses un rencor que me asfixiaba.	You gave it to me to forgive, and I kept for months and months a grudge that suffocated me.
Cuando volví de la operación me levanté una noche porque creía que alguien me asfixiaba.	Anyway, when I came back after surgery, I woke up one night, convinced that someone was suffocating me.
Y desde entonces cada vez que caminaba una o dos cuadras me asfixiaba, tenía que pararme aunque estuviera caminando en lo plano.	And since then, every time I walked one or two blocks, I had difficulties breathing.
Sentí que la tristeza me asfixiaba tanto que no pude salir de la cama.	I felt that my sadness had stifled me so much that I couldn't get out of bed.