מסיר הכתמים יכול לפגוע בבד.

Here מסיר is functioning as a noun: remover.

It comes from the verb להסיר = to remove. Hebrew often uses a form that looks like a present-tense verb as a noun or adjective. So:

• מסיר can mean removing in some contexts
• but in מסיר הכתמים, it means stain remover

So this is not saying removes the stains. It is naming a thing: the stain remover.

This is a very common Hebrew structure called construct state (סמיכות).

Literally, מסיר הכתמים is something like:

• remover of the stains

But in natural English, that becomes:

• stain remover

In Hebrew, this kind of X of Y relationship is often expressed by putting the two nouns next to each other:

• מסיר הכתמים = stain remover
• first noun: מסיר = remover
• second noun: הכתמים = the stains

Because in a construct phrase, the definiteness is usually marked on the second noun, not the first.

So:

• מסיר כתמים = a stain remover
• מסיר הכתמים = the stain remover / stain remover in a definite sense

Even though מסיר itself does not get ה־, the whole phrase can still be definite because the second word is definite.

This is very different from English, so it is a common thing for learners to notice.

Hebrew often uses a plural noun where English uses a singular noun in compounds.

So:

• כתם = stain
• כתמים = stains

מסיר הכתמים literally means remover of stains. That is the natural Hebrew way to say stain remover.

So the plural here is completely normal.

יכול means can / is able to.

It agrees with the subject מסיר הכתמים, which is grammatically:

• masculine
• singular

So Hebrew uses:

• יכול = masculine singular

If the subject were feminine singular, you would get יכולה.

After יכול in Hebrew, you normally use the infinitive.

So:

• יכול לפגוע = can damage / can harm
• literally: is able to damage

The ל־ on לפגוע is the normal marker of the infinitive, like to in English:

• לפגוע = to harm / to damage

לפגוע can mean several things depending on context, including:

• to hurt
• to harm
• to damage
• to hit (in some contexts)

Here, with בד (fabric/material), it means:

• to damage
• to harm

So יכול לפגוע בבד means can damage the fabric.

Because פגע often takes the preposition ב־.

So Hebrew says, literally:

• to harm in/at the fabric

But in natural English, we say:

• to damage the fabric
• to harm the fabric

This is just a verb-preposition pattern you have to learn with the verb:

• לפגוע במישהו = to hurt someone
• לפגוע במשהו = to damage something

Because ב־ + ה־ usually contract into one form in Hebrew.

So:

• ב = in / on / at
• הבד = the fabric

Together they become:

• בבד = in the fabric / on the fabric / the fabric depending on context

In pointed Hebrew, this would reflect the contraction more clearly. In unpointed Hebrew, you simply see בבד.

In this sentence, it means the fabric as the thing being affected.

A natural pronunciation is:

masir ha-ktamim yakhol lifgoa ba-bad

Word by word:

• מסיר = masir
• הכתמים = ha-ktamim
• יכול = yakhol
• לפגוע = lifgoa
• בבד = ba-bad

So the whole sentence sounds roughly like:

masir ha-ktamim yakhol lifgoa ba-bad

Yes. It is very normal.

The structure is:

• subject: מסיר הכתמים
• modal: יכול
• infinitive: לפגוע
• prepositional object: בבד

So literally:

• The stain remover can damage the fabric

That is a completely natural Hebrew sentence pattern.